Bringing back woolly mammoths and dodos is a bad idea

A 42,000-year-old woolly mammoth specimen on display at the Field Museum in Chicago. | M. Spencer Green/AP De-extinction isn’t worth the ethical cost. On January 6, 2000, the bucardo (also known as the Pyrenean ibex, a subspecies of wild mountain goat) was confirmed extinct — for the first time,…

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